558 results for “Reaction Department”, page 24 of 28
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Medical study · Medical research · 1979
Cosmetic talc and ovarian cancer
…the Cosmetic Toiletry and Perfumery Association's voluntary guidelines for making asbestos-free talc was monitored. The authors stated that talc is known to provoke strong inflammatory reactions in the lungs, pleural cavity and peritoneal cavity…
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Medical study · Medical research · 1988
Cooperative stimulation by sulfite and crocidolite asbestos fibres of enzyme catalyzed production of reactive oxygen species
…plus the chemical EDTA produced 2160 pmol of ethylene, against 683 pmol for EDTA alone and 29 pmol for crocidolite alone. The authors stated that these model reactions are no proof of reactions in the body.
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Medical study · Medical research · 1980
Asbestosis and systemic lupus erythematosus
…as they knew, no such case had been described before. They suggested it could be a particular expression of immune reactions reported in many asbestos workers, possibly analogous to Caplan-Collinet syndrome (silicosis with rheumatoid arthritis).
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Medical study · Medical research · 1986
Outcome of asbestos exposure (lung fibrosis and antinuclear antibodies) with respect to skin reactivity: an 8-year longitudinal study
…Among the 52 men who did respond, 2 did. Workers with ANA more often had weak skin reactions, and this was only partly explained by asbestosis cases. Smoking habits did not differ between responders and nonresponders…
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Medical study · Medical research · 1981
Asbestos inhalation and the induction of splenic lymphocytic proliferation in the rat
…The authors concluded that asbestos inhalation produced two distinct effects on the macrophages, one attributed to a putative asbestos-related neoantigen. They suggested immune reactions might contribute to asbestosis. The number of rats was not reported.
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Medical study · Medical research · 2001
Localised spontaneous regression in mesothelioma -- possible immunological mechanism
…lobe. Blood samples from her last 11 months showed antibodies against mesothelioma. Two of these reactions faded and one stayed stable. The authors judged this strong circumstantial evidence linking the immune cells to the regression. They…
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Medical study · Medical research · 1998
Medical thoracoscopic talc pleurodesis for chylothorax due to lymphoma: a case series
…day evaluation interval. Complications included medication reactions in two patients (8.3%) and ARDS in one patient (4.1%). Many patients with lymphoma-related chylothorax are refractory to chemotherapy and/or radiation therapy. In this group…
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Medical study · Medical research · 2003
Evaluation of the catalytic activity of lipases immobilized on chrysotile for esterification
…the Mucor javanicus preparation gave yields of 82%, 80%, 25% and 24% over four uses. The authors concluded that chrysotile with adsorbed lipases is a very attractive and viable alternative for enzyme reactions in organic solvents.
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Medical study · Medical research · 1988
Effects of informing workers of their health risks from exposure to toxic materials
…definitely should be told. The authors concluded that informing workers carried little risk of mental distress, and suggested that information alone was not sufficient to change smoking behavior. The study could not assess short-term reactions.
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Medical study · Medical research · 1998
Reactive oxygen species: their relation to pneumoconiosis and carcinogenesis
…caused lung immune cells to release an inflammatory signaling protein (TNF-alpha), which the authors linked to metal-driven free radical reactions. The authors concluded that their studies support the hypothesis that ROS are involved in…
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Medical study · Medical research · 1997
Efflux of reduced glutathione after exposure of human lung epithelial cells to crocidolite asbestos
…in the same level of intracellular GSH depletion and efflux and the same decrease in gamma-GCS activity as treatment with unmodified crocidolite, which suggests that iron-catalyzed reactions were not responsible for the GSH depletion.
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Medical study · Medical research · 1986
Cytokine regulation of lung fibroblast proliferation. Pulmonary and systemic changes in asbestos-induced pulmonary fibrosis
…later loss of the blood-cell inhibitor may be a consequence or amplifier of fibrosis. They noted that, given the injection method, their data do not relate to very early reactions to low-level inhaled asbestos.
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Medical study · Medical research · 1999
Role of transcription factor NF-kappaB in asbestos-induced TNFalpha response from macrophages
…were inhibited by oxygen radical scavengers and were enhanced by antioxidant enzyme inhibitors. These results indicate that asbestos-induced TNFalpha gene expression is mediated through a process that involves NF-kappaB activation and free radical reactions.
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Medical study · Medical research · 1995
Iron and reactive oxygen species in the asbestos-induced tumor necrosis factor-alpha response from alveolar macrophages
…and for interleukin-1 alpha about 10-fold. The authors concluded that free radicals produced by iron-catalyzed reactions mediate asbestos-induced TNF-alpha gene expression and secretion. They noted that deferoxamine may not remove all…
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Medical study · Medical research · 1978
Lymphocyte responses to phytohaemagglutinin in patients with asbestosis and pleural mesothelioma
…Two of the ten showed slight impairment, and all ten showed delayed skin reactions to common test substances. The authors concluded that the study suggests a link between impaired T-lymphocyte function and the scarring process…
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Medical study · Medical research · 1980
The follow-up study of skin reactivity to recall antigens and E- and EAC-RFC profiles in blood in asbestos workers
We have determined cutaneous DTH reactions to SK-SD and PPD and peripheral blood lymphocyte profiles in a group of asbestos workers in two consecutive surveys. It was found that asbestosis and, to a lesser extent…
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Medical study · Medical research · 1994
The human evidence: parenchymal and pleural changes
Asbestos inhalation can cause fibrotic reactions both in the lung parenchyma and in the pleura. The incidence and relative proportions of these lesions in any cohort will be dependent on: (1) the time factor: both asbestosis…
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Medical study · Medical research · 1994
Oxygen radicals and asbestos-mediated disease
Asbestos fibers are potent elaborators of active oxygen species whether by reactions involving iron on the surface of the fiber, or by attempted phagocytosis of fibers by cell types resident in the lung. The link between…
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Medical study · Medical research · 1986
Comparative epidemiology of men exposed to asbestos and man-made mineral fibers
Comparative analyses are presented of selected studies of long-term reactions to occupational exposures to asbestos and man-made mineral fibers (MMMF), with emphasis on studies with dose-response information and long enough period of follow…
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Medical study · Medical research · 2014
Evidence of arsenic release promoted by disinfection by-products within drinking-water distribution systems
Changes in disinfectant type could trigger a cascade of reactions releasing pipe-anchored metals/metalloids into finished water. However, the effect of pre-formed disinfection by-products on the release of sorbed contaminants (arsenic-As in…